Question

i) A solution has 50g of salt in 320g of water. Calculate the mass percent of the salt in the

solution.

ii) Name any one Metalloid.

iii) What type of change is cutting of wood.​

Answer 1

Answer:

(i). Mass percent of sugarMass percent of sugar= mass of sugar/mass of solutions ×100

= 50 g/500g ×100

=10%

Mass percent of water = 100 - 10 = 90%

(ii). one metalloid is boron

(iii).Cutting wood is a physical change as there is no change in the original composition of wood.